Should I call labor and delivery?

Yo

I’ll be 36weeks tomorrow and I’ve been having period cramps since yesterday, but today they hurt alittle more & the top of my stomach gets really hard and then the bottom of stomach feels like tight also. My back also hurts when this happens. I don’t know if they’re real contractions or just Braxton Hicks. This is my second baby, first one came at 26w6d with just my water breaking no pain at all. So I’m kinda new to this 😣😖😩

Should I go or call just in case since I’m still early?